A thyristor controlled series capacitor module including a capacitor connectable in series with a power line, a thyristor valve connected in parallel with the capacitor, a breaker connected in parallel with the thyristor valve, and an inductor. By providing a simplified breaker arrangement, the number of components is reduced.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A thyristor controlled series capacitor module, comprising: a capacitor connectable in series with a power line; a thyristor valve connected in parallel with the capacitor; a breaker connected in parallel with the thyristor valve; and an inductor; wherein the inductor is connected in series with the capacitor; wherein the serial connected capacitor and inductor are connected in parallel with the thyristor valve, and wherein a path through the breaker, when the breaker is closed, forms a current path during short circuit faults on the power line and during bypass operation of the module.
2. The module according to claim 1 , wherein the thyristor valve comprises two anti-parallel thyristors.
3. The module according to claim 1 , further comprising: a varistor connected in parallel with the capacitor.
4. A method of controlling a thyristor controlled series capacitor module, the module comprising an inductor connected in series with a capacitor and connectable in series with a power line, a thyristor valve connected in parallel with the inductor and capacitor, and a breaker connected in parallel with the thyristor valve, the method comprising: in normal operation, keeping the breaker open; upon short circuit faults on the power line, closing the breaker and keeping the breaker closed; and during bypass operation of the module, closing the breaker and keeping the breaker closed.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
December 28, 2005
December 20, 2011
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